/48 Subnet on IPv6 in Airtel 4G

  • Thread starter Thread starter ishanjain28
  • Start date Start date
  • Replies Replies 16
  • Views Views 5,722
ishanjain28

ishanjain28

Messages
572
Location
UP
ISP
Anjani Broadband 100mbps, Airtel LTE/5G Failover & AS199347
Good evening,

I am using Airtel 4G sim in Huawei 5G CPE Pro, 5g cpe pro is running in bridge mode and it is connected to a Archer C7.

Airtel/Jio and Vi in some places are issuing IPv6 addresses to their LTE users but they only issue a /64 IPv6 block. The problem with this is, Archer C7 can not redistribute IPv6 address from this /64 block to the clients that are connected to it.

There are some workarounds to this problem but I haven't been able to get them to work on OpenWRT and the stock firmware refuses to fetch a IPv6 address for itself. :/

If I put the 5G cpe pro out of bridge mode(i.e. In Router mode) and put archer c7 in AP mode, Then IPv6 works fine. So That means, the 5G cpe pro is configured to handle this case correctly. In this scenario, The clients don't have the full /64 block but atleast they have IPv6 connectivity.



So, My question is,

Is it possible to get airtel to give me a /48 block instead of a /64 block? Who should I even contact for this? I have already tried googling for this but I couldn't find anyone who has tried this before. :/

I really really like IPv6 and want it to work. So any help in getting even basic IPv6 connectivity(i.e. even a /128 for clients) or any way I can get a /48 from airtel is much appreciated.
 
Sort by date Sort by votes
/48 is given to small size ISPs not customers most of time (sometimes small business too ). /32 is given to Larger ISPs i think. /56 might be what you are looking for. No idea how to obtain it from Airtel though, they don't assign prefixes like this to individual customers AFAIK.
 
Upvote 0
I doubt they ll entertain your request unless you are some higher end corporation even in that you'll have to pay hefty amount for such a big block of ip address.

How is 5G cpe pro? How much and from where? Also speed you able to attain? 2ca or 3ca or .....? Worth it?
 
Upvote 0
JB701 said:
/48 is given to small size ISPs not customers most of time (sometimes small business too ). /32 is given to Larger ISPs i think. /56 might be what you are looking for. No idea how to obtain it from Airtel though, they don't assign prefixes like this to individual customers AFAIK.
Click to expand...
Thanks for the correction. I later realized this was not going to work so I reset my router and tried to fix IPv6 again and this time, It worked :)

Previously, I was trying to configure this in LUCI but the UI doesn't have the appropriate fields to do this. So, I added this in /etc/config/dhcp, Restarted wan/wan6/lan interfaces and odhcpcd/dnsmasq and it worked!

Code: 
config dhcp 'lan'
    option ra 'relay'
    option dhcpv6 'relay'
    option ndp 'relay'

config dhcp 'wan6'
    option dhcpv6 'relay'
    option ra 'relay'
    option ndp 'relay'
    option master '1'

Now all the clients get IPv6 addresses and I can reach any IPv6 enabled machine from the clients. So, I don't really need to do this anymore.
 
Upvote 0
How is 5G cpe pro? How much and from where? Also speed you able to attain? 2ca or 3ca or .....? Worth it?
Click to expand...

@igloo In short, It's absolutely amazing.

I bought from router-switch for 33k total. 259USD(19K) Product + 49 USD(3.7K) Shipping + 10.5 Customs tax.

For band support, See the datasheet, Source

Only band missing from this is 40A-40A.

I had a MR600 before this. On Airtel, At night the max speed I saw on that router was 93mbit on 3+40 band. On average though, Speeds were significantly worse hovering at around 15-20mbit. In this router, 1+3 performed about the same. Here is my review on Amazon if you want a overview of the software issues in that router, Terrible Product, Do not recommend

In 5G cpe pro, The max speed I have seen is 140-150mbit with 3+40 CA. I don't usually use it with 3+40 CA since speeds in this config fluctuate a lot. I use it with 1+3 CA where I get 35-40mbit even at peak times, Otherwise it's hovers around 60mbit.



The only 2 complaints I had with this router were,

1. No bridge mode
2. It shows captive portal on all devices if LTE disconnects for even a second which can disrupt apps on Android TV.

But in the last firmware update, They added bridge mode and now both of these complaints are gone. :)

Lack of 40A-40A CA is not a huge problem for me since we don't have this CA active here anyway.



I installed it indoors on 3rd floor close to a window and wrapped in thin polythene for protection from dust/water and then installed a cat6 cable to my main router. It's perfect.
 
Upvote 0
10k customs? you didn't undervalue it?
Click to expand...

@JB701 It was being shipped via Fedex so I didn't want to risk it since undervaluing and getting caught would've attracted even higher penalties. I was banking on the assumption that this product will be imported under a particular HS code which has no taxes, So I will only have to pay small amount to customs. Later it turned out, That's not how it worked and unless I had a IEC certificate, It'll be imported for personal use which comes under HS9804 and attracts 35% in taxes.
 
Upvote 0
Customs doesn't overcharge you for anything unless of course someone is sending you a couple of books for free and you are being charged an 80% customs duty. LOL.
 
Upvote 0
You must log in or register to reply here.
Back